kc3-lang/SDL/src/video/uikit/SDL_uikitmodes.m

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• Hash : f0505766
  Author :
  Date : 2016-09-13T22:18:06
  

  Initial Apple TV / tvOS support. The Apple TV remote is currently exposed as a joystick with its touch surface treated as two axes. Key presses are also generated when its buttons and touch surface are used. A new hint has been added to help deal with deciding whether to background the app when the remote's menu button is pressed: SDL_HINT_APPLE_TV_CONTROLLER_UI_EVENTS.

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• src/video/uikit/SDL_uikitmodes.m

• /*
    Simple DirectMedia Layer
    Copyright (C) 1997-2016 Sam Lantinga <slouken@libsdl.org>
  
    This software is provided 'as-is', without any express or implied
    warranty.  In no event will the authors be held liable for any damages
    arising from the use of this software.
  
    Permission is granted to anyone to use this software for any purpose,
    including commercial applications, and to alter it and redistribute it
    freely, subject to the following restrictions:
  
    1. The origin of this software must not be misrepresented; you must not
       claim that you wrote the original software. If you use this software
       in a product, an acknowledgment in the product documentation would be
       appreciated but is not required.
    2. Altered source versions must be plainly marked as such, and must not be
       misrepresented as being the original software.
    3. This notice may not be removed or altered from any source distribution.
  */
  #include "../../SDL_internal.h"
  
  #if SDL_VIDEO_DRIVER_UIKIT
  
  #include "SDL_assert.h"
  #include "SDL_uikitmodes.h"
  
  @implementation SDL_DisplayData
  
  @synthesize uiscreen;
  
  @end
  
  @implementation SDL_DisplayModeData
  
  @synthesize uiscreenmode;
  
  @end
  
  
  static int
  UIKit_AllocateDisplayModeData(SDL_DisplayMode * mode,
      UIScreenMode * uiscreenmode)
  {
      SDL_DisplayModeData *data = nil;
  
      if (uiscreenmode != nil) {
          /* Allocate the display mode data */
          data = [[SDL_DisplayModeData alloc] init];
          if (!data) {
              return SDL_OutOfMemory();
          }
  
          data.uiscreenmode = uiscreenmode;
      }
  
      mode->driverdata = (void *) CFBridgingRetain(data);
  
      return 0;
  }
  
  static void
  UIKit_FreeDisplayModeData(SDL_DisplayMode * mode)
  {
      if (mode->driverdata != NULL) {
          CFRelease(mode->driverdata);
          mode->driverdata = NULL;
      }
  }
  
  static int
  UIKit_AddSingleDisplayMode(SDL_VideoDisplay * display, int w, int h,
      UIScreenMode * uiscreenmode)
  {
      SDL_DisplayMode mode;
      SDL_zero(mode);
  
      mode.format = SDL_PIXELFORMAT_ABGR8888;
      mode.refresh_rate = 0;
      if (UIKit_AllocateDisplayModeData(&mode, uiscreenmode) < 0) {
          return -1;
      }
  
      mode.w = w;
      mode.h = h;
      if (SDL_AddDisplayMode(display, &mode)) {
          return 0;
      } else {
          UIKit_FreeDisplayModeData(&mode);
          return -1;
      }
  }
  
  static int
  UIKit_AddDisplayMode(SDL_VideoDisplay * display, int w, int h,
                       UIScreenMode * uiscreenmode, SDL_bool addRotation)
  {
      if (UIKit_AddSingleDisplayMode(display, w, h, uiscreenmode) < 0) {
          return -1;
      }
  
      if (addRotation) {
          /* Add the rotated version */
          if (UIKit_AddSingleDisplayMode(display, h, w, uiscreenmode) < 0) {
              return -1;
          }
      }
  
      return 0;
  }
  
  static int
  UIKit_AddDisplay(UIScreen *uiscreen)
  {
      CGSize size = uiscreen.bounds.size;
  
      /* Make sure the width/height are oriented correctly */
      if (UIKit_IsDisplayLandscape(uiscreen) != (size.width > size.height)) {
          CGFloat height = size.width;
          size.width = size.height;
          size.height = height;
      }
  
      SDL_VideoDisplay display;
      SDL_DisplayMode mode;
      SDL_zero(mode);
      mode.format = SDL_PIXELFORMAT_ABGR8888;
      mode.w = (int) size.width;
      mode.h = (int) size.height;
  
      UIScreenMode *uiscreenmode = uiscreen.currentMode;
  
      if (UIKit_AllocateDisplayModeData(&mode, uiscreenmode) < 0) {
          return -1;
      }
  
      SDL_zero(display);
      display.desktop_mode = mode;
      display.current_mode = mode;
  
      /* Allocate the display data */
      SDL_DisplayData *data = [[SDL_DisplayData alloc] init];
      if (!data) {
          UIKit_FreeDisplayModeData(&display.desktop_mode);
          return SDL_OutOfMemory();
      }
  
      data.uiscreen = uiscreen;
  
      display.driverdata = (void *) CFBridgingRetain(data);
      SDL_AddVideoDisplay(&display);
  
      return 0;
  }
  
  SDL_bool
  UIKit_IsDisplayLandscape(UIScreen *uiscreen)
  {
  #if !TARGET_OS_TV
      if (uiscreen == [UIScreen mainScreen]) {
          return UIInterfaceOrientationIsLandscape([UIApplication sharedApplication].statusBarOrientation);
      } else
  #endif /* !TARGET_OS_TV */
      {
          CGSize size = uiscreen.bounds.size;
          return (size.width > size.height);
      }
  }
  
  int
  UIKit_InitModes(_THIS)
  {
      @autoreleasepool {
          for (UIScreen *uiscreen in [UIScreen screens]) {
              if (UIKit_AddDisplay(uiscreen) < 0) {
                  return -1;
              }
          }
      }
  
      return 0;
  }
  
  void
  UIKit_GetDisplayModes(_THIS, SDL_VideoDisplay * display)
  {
      @autoreleasepool {
          SDL_DisplayData *data = (__bridge SDL_DisplayData *) display->driverdata;
  
          SDL_bool isLandscape = UIKit_IsDisplayLandscape(data.uiscreen);
          SDL_bool addRotation = (data.uiscreen == [UIScreen mainScreen]);
          CGFloat scale = data.uiscreen.scale;
          NSArray *availableModes = nil;
  
  #if TARGET_OS_TV
          addRotation = SDL_FALSE;
          availableModes = @[data.uiscreen.currentMode];
  #else
          availableModes = data.uiscreen.availableModes;
  #endif
  
  #ifdef __IPHONE_8_0
          /* The UIScreenMode of an iPhone 6 Plus should be 1080x1920 rather than
           * 1242x2208 (414x736@3x), so we should use the native scale. */
          if ([data.uiscreen respondsToSelector:@selector(nativeScale)]) {
              scale = data.uiscreen.nativeScale;
          }
  #endif
  
          for (UIScreenMode *uimode in availableModes) {
              /* The size of a UIScreenMode is in pixels, but we deal exclusively
               * in points (except in SDL_GL_GetDrawableSize.) */
              int w = (int)(uimode.size.width / scale);
              int h = (int)(uimode.size.height / scale);
  
              /* Make sure the width/height are oriented correctly */
              if (isLandscape != (w > h)) {
                  int tmp = w;
                  w = h;
                  h = tmp;
              }
  
              UIKit_AddDisplayMode(display, w, h, uimode, addRotation);
          }
      }
  }
  
  int
  UIKit_SetDisplayMode(_THIS, SDL_VideoDisplay * display, SDL_DisplayMode * mode)
  {
      @autoreleasepool {
          SDL_DisplayData *data = (__bridge SDL_DisplayData *) display->driverdata;
  
  #if !TARGET_OS_TV
          SDL_DisplayModeData *modedata = (__bridge SDL_DisplayModeData *)mode->driverdata;
          [data.uiscreen setCurrentMode:modedata.uiscreenmode];
  #endif
  
          if (data.uiscreen == [UIScreen mainScreen]) {
              /* [UIApplication setStatusBarOrientation:] no longer works reliably
               * in recent iOS versions, so we can't rotate the screen when setting
               * the display mode. */
              if (mode->w > mode->h) {
                  if (!UIKit_IsDisplayLandscape(data.uiscreen)) {
                      return SDL_SetError("Screen orientation does not match display mode size");
                  }
              } else if (mode->w < mode->h) {
                  if (UIKit_IsDisplayLandscape(data.uiscreen)) {
                      return SDL_SetError("Screen orientation does not match display mode size");
                  }
              }
          }
      }
  
      return 0;
  }
  
  int
  UIKit_GetDisplayUsableBounds(_THIS, SDL_VideoDisplay * display, SDL_Rect * rect)
  {
      @autoreleasepool {
          int displayIndex = (int) (display - _this->displays);
          SDL_DisplayData *data = (__bridge SDL_DisplayData *) display->driverdata;
  
          /* the default function iterates displays to make a fake offset,
           as if all the displays were side-by-side, which is fine for iOS. */
          if (SDL_GetDisplayBounds(displayIndex, rect) < 0) {
              return -1;
          }
  
          CGRect frame = data.uiscreen.bounds;
  
  #if !TARGET_OS_TV
          if (!UIKit_IsSystemVersionAtLeast(7.0)) {
              frame = [data.uiscreen applicationFrame];
          }
  #endif
  
          rect->x += frame.origin.x;
          rect->y += frame.origin.y;
          rect->w = frame.size.width;
          rect->h = frame.size.height;
      }
  
      return 0;
  }
  
  void
  UIKit_QuitModes(_THIS)
  {
      /* Release Objective-C objects, so higher level doesn't free() them. */
      int i, j;
      @autoreleasepool {
          for (i = 0; i < _this->num_displays; i++) {
              SDL_VideoDisplay *display = &_this->displays[i];
  
              UIKit_FreeDisplayModeData(&display->desktop_mode);
              for (j = 0; j < display->num_display_modes; j++) {
                  SDL_DisplayMode *mode = &display->display_modes[j];
                  UIKit_FreeDisplayModeData(mode);
              }
  
              if (display->driverdata != NULL) {
                  CFRelease(display->driverdata);
                  display->driverdata = NULL;
              }
          }
      }
  }
  
  #endif /* SDL_VIDEO_DRIVER_UIKIT */
  
  /* vi: set ts=4 sw=4 expandtab: */
  

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